{
  "manageEntity": {
    "action": "Update",
    "entityId": "373060873",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaaf900e7d57b617c91681b403ec6611a6954798cbec85be958c6572593d0077f",
    "signature": "0x8829517471ab7cf9e27336f18e9e76e377646b65275a8b1497f6871e9fe7dce91302c5c79edb3ca0d8ac4f29a1e53047d1e9a07b6f55ac3a6a7d14859940c6041c",
    "signer": "0x2C8Bde4793d71DD6747759CCdF448f4C7b08DB57",
    "userId": "373060873"
  }
}