{
  "manageEntity": {
    "action": "Update",
    "entityId": "876052617",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3a5ddf9445e4e149c708ce3cc2d8a688017153233613aa85e6b06f1830e76801",
    "signature": "0x0a7ce5ba809efc4391d6b19fcb5e176e1584acaf4cd1ff62025bb698c0f0baea0b821bd7e69bcd93ce5375d0f7aeb5368eff16234e2c1f399a1c217dc043b9111c",
    "signer": "0xf43ef72818c171b0d5206E56D3F298e97EbaC5A1",
    "userId": "876052617"
  }
}