{
  "manageEntity": {
    "action": "Update",
    "entityId": "549889067",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x088864378fa6a9b5b81a6b7963f0f3eb78f9aea68df615624853c521b695aa2f",
    "signature": "0x2ad80293e2b40a2d42ea438681c4ddc6d93563ccdca527383b30f3532a201ddc429eaf3042985f404f7c6ab1ab64a6d087830220bd4549872072e439a0055e941c",
    "signer": "0xC3A754c1c5591B5bda6c73d83D539c41997E1180",
    "userId": "549889067"
  }
}