{
  "manageEntity": {
    "action": "Update",
    "entityId": "300244455",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7zmkq5dvaevsnjdv6qufzv7m4x6xr7i74n3ne74s3tcq3ghxbtta\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":882171785}]}}}",
    "nonce": "0xbcbb64b98d7c340b7b7bec7c044af6513f12af21659b7b32812be87e36492a44",
    "signature": "0x72ad5b5297af48b596fe7e624130abdd59ef01f15625ffd3c78c15ad505984392f7bb7a2f3f0f8fc49797dbba40233724764aaff30878943babff5628c0cebee1c",
    "signer": "0x441C597b79DaeaBA9eb0B8ccA068e23c5a7c5843",
    "userId": "300244455"
  }
}