{
  "manageEntity": {
    "action": "Save",
    "entityId": "2080058992",
    "entityType": "Track",
    "nonce": "0x3e486d6c11215bae14b49bd5f7b36dabc1420b3fca978ceda39812872896e7ad",
    "signature": "0x38726fac6dd8c1c269050e25505fc725092c05133361d96448b75bfbfda6d7b24f55353813a08913f87c5c6dc37a48a896fc1551afba121f7db2d5f4947d82891c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}