{
  "manageEntity": {
    "action": "Save",
    "entityId": "1104549",
    "entityType": "Track",
    "nonce": "0x241124520f683c2c8a9a0ba9448eaffd3b76a3b2a770120bc9473779b654d5ed",
    "signature": "0x9113de0824fa6b10866869af89b16ad331adc7cf9fc973f9ec59036666ab5dc90e8cd25fc648f1af9d8b999e2ec42bfeb947069dd34043a42505d07c94a2a3321b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}