{
  "manageEntity": {
    "action": "Save",
    "entityId": "1176599120",
    "entityType": "Track",
    "nonce": "0x7492e8d3d6955afad05133361388f975867dbd0f8570e2fa652d8f46b7e7e096",
    "signature": "0x3c1edefcabe658d5e97d8dd1af4229d134a24789e6af1352aae12c5d8139e5fc6758830e4409aad13f3743168998146983ee4911828ec63f03ea9a80dbc98cfa1b",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}