{
  "manageEntity": {
    "action": "Update",
    "entityId": "787787230",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3c3da755fcd57cfbaae4be94a5f293b76da12256f58975c9b994a8c2208a50bb",
    "signature": "0x9ab35c81fc3edb9d557dbaffafdf10ef348325b9d2ffe4b1c70acd7318b57ab52f3f7c66f77e3891a31956e1dde666398ed80d1966ea45637e0c54682b6dd04f1b",
    "signer": "0x674FFC02F71bdD4bD3Ae60c618579EBDD541E397",
    "userId": "787787230"
  }
}