{
  "manageEntity": {
    "action": "Save",
    "entityId": "10773979",
    "entityType": "Track",
    "nonce": "0x6ba80aeadcc7550db7e081a7703b1aa3678bcf6347f7dfe14e57a400de287aa5",
    "signature": "0xce94da1c364c987cce98f355dfb639d51fd41d3da8199a5951b7721aaa1199253a94110b4b07dbac362c58899d8297aa94b216c02ee90e1e0d8848ba1034a8b61b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}