{
  "manageEntity": {
    "action": "Save",
    "entityId": "1233975362",
    "entityType": "Track",
    "nonce": "0x36d7e5fe23db8b57fce1e7f8664137476b8d518335aa0c291a5068dd040d97b7",
    "signature": "0x6a6b8b0ce4ed3a4e707b7d17cb47b57d6c5d0c6fca1d468453248124cc1a2f6410e3ffb04e815282c320fac20b877c0390bf591893eb800461d17bf2ac19829c1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}