{
  "manageEntity": {
    "action": "Save",
    "entityId": "1136960728",
    "entityType": "Track",
    "nonce": "0x54f1792199e0cf0dedf407665b8bd6dadbfa7260cbd314f18f51c4896e43231c",
    "signature": "0x4f00223f726c76849a5ff23ce6698cb56ab621b828a6a4060db47895ddfb12487d8e5c006e4144d4341afcedd8e12139ab9893ece33700e0956eed50480e76df1b",
    "signer": "0x7B3AFAc08245Ef9d1CFfF7f7cdDBCAADE68f94E3",
    "userId": "230426"
  }
}