{
  "manageEntity": {
    "action": "Save",
    "entityId": "1005060",
    "entityType": "Track",
    "nonce": "0xf04e9175122d6dc2b85877b44fc7ef70d804e00bc317890fd7a97b6804edd446",
    "signature": "0xd21908d9f60ab32bc48c883315b3603e659d32a5dca209b5ddf28768ffb5020f73dd5f7ccb5b0a06708c16c27deef64c268e623a1c9fb63e44626e6df95b42991c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}