{
  "manageEntity": {
    "action": "Save",
    "entityId": "2054455131",
    "entityType": "Track",
    "nonce": "0x96e4d4a705ef74b86f1644e6a6ba9ce685f83d417b154a3ee055710b5424ccaf",
    "signature": "0xd597b221caa42d714f49301dc8aa6d91f4acb989c3aa36608c6490f911fd56cc4955d57b7b408f34a1ba2ff3cda617ec1d42ed19329e3cac9c3da2cb28f40ade1c",
    "signer": "0xBBBE9eFc177a4E708d317195Fa81aA6E8E2F7E92",
    "userId": "557135181"
  }
}