{
  "manageEntity": {
    "action": "Update",
    "entityId": "450615362",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierapixckry3wkxurgdnz7jprgqqvn5uubydox6b6dhelmx2u3adee5q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":577892560},{\"type\":\"playlist\",\"playlist_id\":533032201},{\"type\":\"playlist\",\"playlist_id\":551267797}]}}}",
    "nonce": "0xefdc8eb82c27b2d9c1177469fb585f4f3864677113e2ff23ad2819ce42aefd82",
    "signature": "0x2b69a6f77f4ee002b145b1da67d4c2405a2144257eff56f873de3ee3a0f687ec3315028c9f63639613e67ccb79f7f13fe9d5ff5424a4bf82a0d4a311257beff71b",
    "signer": "0x84dc3FcE242E8531F4B00Abc3aA0Bee27EC70e68",
    "userId": "450615362"
  }
}