{
  "manageEntity": {
    "action": "Save",
    "entityId": "553027",
    "entityType": "Track",
    "nonce": "0x9524291f05bbd3797e133b1a2ce7a784ba6fe6d3602f47b571da8577d7e109dd",
    "signature": "0xfebaa27f8c5d422ae6c22ae203543b9f394084ffe9a22a00a18ccde8677c849d25462a75418cd6e601df48adf60cf91ba5a16449c83ee0cc516a4d0686ca52e11b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}