{
  "manageEntity": {
    "action": "Update",
    "entityId": "873212552",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierahp63azku5e53w5naehfne5uwhs5gvcc7hgye4gnpgairigowe46q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":409453817},{\"type\":\"playlist\",\"playlist_id\":652901993},{\"type\":\"playlist\",\"playlist_id\":439859344}]}}}",
    "nonce": "0xe9679b340cd7aa3ffa1a7f95d85e3e62201d9cfc42f97f8f0f24ddddd63764dc",
    "signature": "0xc934faa2056f412729a33fe7b56f0a38230eb8f7e0272e0f653c4920806c6e341af5b4fc5a6ad748695997c4cd7fc36b37169c5715572b1a21a6cf68d2c4071c1b",
    "signer": "0xd70cC881fbB38d68490cf7A578B24F81B4d24fb4",
    "userId": "873212552"
  }
}