{
  "manageEntity": {
    "action": "Update",
    "entityId": "457963495",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe7e1e8a11e5fde708c621e26adf634a20217c8bba2490da16b44f394a2502c9a",
    "signature": "0x54d00a6fe6a31e87c7684d04905bb695b6df0b1c76f2ecb8a010e21b28474f47103850d40a14aeab05a64a43e9672f10c7c73ca8d782c962bcb4d291d89046d71b",
    "signer": "0xc8C11Be52705F2664a51f2A1ea4392F4C53e3a39",
    "userId": "457963495"
  }
}