{
  "manageEntity": {
    "action": "Update",
    "entityId": "857551474",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0c9ba5f5366685a20d8ff2db635997e1e5236e8924c930276af8cd07c6ec4efe",
    "signature": "0xe853f8fe64483cc8d42ed353e682642ba08c56a6dfb405d76b00c0732905dbd50099a12d1f7c719e8bb0065c6ead587dca2f9eaa03c3b5b5d805c8f7ae1b238b1c",
    "signer": "0x9de29362DF595E6949CaA2820c5c28c3D6b0CEe1",
    "userId": "857551474"
  }
}