{
  "manageEntity": {
    "action": "Save",
    "entityId": "1856981373",
    "entityType": "Track",
    "nonce": "0x5faa03e454b670f4b839ac0dd516e075ea2519aa6969ff5302b291cdc02e1cfb",
    "signature": "0x32fd44c4e24d9b5cb06a7d0b46451ba7d27615285c6909f2df821d5b712ec8766a2f554f0e24e854ad270e416babf51220542091741b3ef77f1d0ea999dd1a671c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}