{
  "manageEntity": {
    "action": "Update",
    "entityId": "515207100",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe20a2b239aca05027d1df4116d367351c20137cf6ece082e035e2aaebf4128b1",
    "signature": "0x0156a14312d37af20afca9ea3a985a08dc37edd8094a1c82abef52b14f1ad72123b43c9923ab57d9c4c5460d9d80d815a5aa361ab8f7f2d556c4490c0bcfeb101b",
    "signer": "0xbC6F2a03a7eF7517ed79dEA4d42b300BBa79f793",
    "userId": "515207100"
  }
}