{
  "manageEntity": {
    "action": "Save",
    "entityId": "1136341332",
    "entityType": "Track",
    "nonce": "0x672b567b4ff474c4218e4738821a14d09538d0ef15bef1553fa80809d7e50fdb",
    "signature": "0xb0bc5ae881aa720fe31bc03ba6a2ee447a0576ba3a15aebc646e25479647c0ae1adb358e5c075e2ea032ff7446ad357513485f0821339da7050cf9de84d4d1a51b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}