{
  "manageEntity": {
    "action": "Save",
    "entityId": "718990120",
    "entityType": "Track",
    "nonce": "1790694607078897545",
    "signature": "0xde0ab124353c8fe9de7f15e39ec9bd9b15ed3d9049ec39e71f7a378ab48322f86383ef9f411cefb903aa78cfb334bfbe19df949ced43a871235025b04eb9c5ca1c",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}