{
  "manageEntity": {
    "action": "Update",
    "entityId": "616774019",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0244d76cc67c3488dec45cf7fe10e93e3d8fa429e547c0734848e3fbe4ed0cd3",
    "signature": "0x811bb5548da187318ebc2276f5aab0eccbeb9badd312a023b0b8e029c95f62a0640a00c1999566186c0ed7588c5b4f8fb2912fef1c8bbd90e37de2b8a5d1e8211c",
    "signer": "0x5865Afd791ac0d57a0f9e8Fa840D23CF3be86932",
    "userId": "616774019"
  }
}