{
"manageEntity": {
"action": "Save",
"entityId": "2003109505",
"entityType": "Track",
"nonce": "0xd9b36467eb7d5f3d7050374c8f2b8d26cb72dc319592b14849137e6f5982be84",
"signature": "0xfddab3785bb51413057185ddda77db0d894201ac9e42fc57e52fba50c3a9c9c9495f4a0c4ae762694702479dcbf1b17b40283351d7f0c960d8b93e191665cd481b",
"signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
"userId": "77551267"
}
}