{
  "manageEntity": {
    "action": "Update",
    "entityId": "154520",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieracvc4xlctpg2fz2vyqrbzjir3gecnyn5q2wa2fvvuc2m6q2s6lhta\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":43501},{\"type\":\"playlist\",\"playlist_id\":377923022},{\"type\":\"playlist\",\"playlist_id\":1082251267},{\"type\":\"playlist\",\"playlist_id\":911158313}]}}}",
    "nonce": "0xb89e891f0d255d73dacd798ab24500f0dfd0cb80b43ba0766bfc65db98833e55",
    "signature": "0xf28150f5af1b9016600ae1a9947d83af85d34d03ab0f982fcadf4f4095b8e3db432111a4225b70f6f032e8612c40b1f9fc49411fee1046baf3794d56e05608281b",
    "signer": "0x36731fF6550065F12E9035E4a96956aeC85B9D5a",
    "userId": "154520"
  }
}