{
  "manageEntity": {
    "action": "Save",
    "entityId": "1173996151",
    "entityType": "Track",
    "nonce": "0x61ff8ac35519cd5e1f45a12a3ab4bc41459a880b0fbb2a9cd80cfa419748f55b",
    "signature": "0xdfea5cbc38f1261eaa27db46ef539c61aa571f99e1845e96b35bf95c921189f81a5f2e77640af89f949aa3b3a5a8c177d62b9116a3954afb720c445754e053681c",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}