{
  "manageEntity": {
    "action": "Save",
    "entityId": "1285210382",
    "entityType": "Track",
    "nonce": "0x2a6c7adce740bb3b4f4fa1e7dbebd8023f75f6a48001f04a1609dcd4f1df4b36",
    "signature": "0xe61042ca1f0805b15fea8b44f3c1963e8e05a08d206d0c95aa0b8a41ee4e63e44f47277e04aa6fb6add4123c2aa0e405d4b5e69b401b09f3c2a5ff8121a42a191c",
    "signer": "0xdf3d2a565Af22F148bCeAc938CD60CF50aD01907",
    "userId": "1686476"
  }
}