{
  "manageEntity": {
    "action": "Save",
    "entityId": "114969551",
    "entityType": "Track",
    "nonce": "0x878bf5de4765e72348a31f53815ac677f56213bd4b53fbcfa6e079406b6d3d34",
    "signature": "0xf1edb1f6d3600085296a43010950e58175005fdb4e526deb00e7cb761961d5815c59454ed42ef59d7900afb4a8edbe18f0c4983548de23a770d947fe279f53ff1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}