{
  "manageEntity": {
    "action": "Save",
    "entityId": "1461309659",
    "entityType": "Track",
    "nonce": "0x488e795c0f334a0145f485961522cbbcd260397e04f7cd7078181332bef6b65e",
    "signature": "0xed47134892ea79e3db1ad481ac1e446cfb688868713a4516d77f87601fd3ba956b0b97483476d6b58735df12381db6d46012f016560a6f41e206b7440f0d327b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}