{
  "manageEntity": {
    "action": "Update",
    "entityId": "596314575",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x261b57d2910252c64f4df78f90b1674214bea901c0141b28b6744ac3d7a5165e",
    "signature": "0x1a741342932aba0ccfb1bb6d06a28880767a8a61faa05e34197c7b9e1f77505e3e25052c1a644b18dca5e9f1df0ff0d731f30d8b6a9d0dbadfd241caf0cba8a41b",
    "signer": "0x54A889EF2FF2eBAB1A2A374F2964571296ee7B9F",
    "userId": "596314575"
  }
}