{
  "manageEntity": {
    "action": "Update",
    "entityId": "172666475",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8abcbb6c151a4ae3f540cdd5e7a5d39738a306b3286cd87c12e521f6ee14a51b",
    "signature": "0xd2ed87afcd88c99d23c0431ffeaa3fc8b2fc0810f4cf4d89a95d41fddab62c5c34823b53e4b045bf9ef71eb04ea3f81c9a0148d63b713363d62734c110b1828e1c",
    "signer": "0x039D6A5da9c5D47955AFCccFC47703C228327DB7",
    "userId": "172666475"
  }
}