{
  "manageEntity": {
    "action": "Save",
    "entityId": "1762746727",
    "entityType": "Track",
    "nonce": "0x596af7a71e80ddb5188f9146dab61a202a1ca85a18727eb7fb28e68507eb6a85",
    "signature": "0xdf5e8671b9f83d78979ceb15b57a461b453363230ea1c4ff3ba125b53294915f425cf0c0366a82d1481220239a018648a9f2bdd54b7db69d2182215d95ef57781b",
    "signer": "0x01eB7915E4941D64a8ddf370bE06647ad5F79d4e",
    "userId": "911613164"
  }
}