{
  "manageEntity": {
    "action": "Save",
    "entityId": "227145366",
    "entityType": "Track",
    "nonce": "0x166d3b32a0153a6411076aa82011707f7d6e137775302242ba8e8defd012f26e",
    "signature": "0x598f3f2196067b7c65948dbe27350676fb6986024c0d9b5c30ac12d0ecbc859f4c95cb66a7698d5647b1a1416fab1a8b8096dd504b507feaf67be2172814076d1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}