{
  "manageEntity": {
    "action": "Save",
    "entityId": "315146699",
    "entityType": "Track",
    "nonce": "0xb8347670105dda2add3b302fe2781d1007a73802035e68fca9c0e0166e116768",
    "signature": "0x826b6701030cbcd371f2d8dde1511ed3236dd35940b4d548611c184815141f2a12d6d617fd7b40dfd73410038b085fdb5683248787f13a947e8ebc186d0dd6751b",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}