{
  "manageEntity": {
    "action": "Update",
    "entityId": "850563596",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierajyhyjom4xjkcibr5t4oammabeoqchrwbruaedf4qnvjrymrw55ya\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":945971000}]}}}",
    "nonce": "0x2b285e6ae98dbd0881932d1f30fe2851d34c7239550d2f8742315f12e2dec98a",
    "signature": "0x79616a3f0fb19761cf9f0b24bf3400b1148297c573d3f09d3e86f3ae25c578e6261e47a03eef97a567c8ea966915f3b291e5dd88bab0074831c948d200017ea41c",
    "signer": "0x11f5dAeb583DAb6754C8137BAA5981043dF9e289",
    "userId": "850563596"
  }
}