{
  "manageEntity": {
    "action": "Save",
    "entityId": "1799068544",
    "entityType": "Track",
    "nonce": "0xe3e068acdbb52e6264f90f5b742e61a6d73931595a71fb5ec35bcd60625dbb6e",
    "signature": "0xa5707eefe7ec726be6ccc64fd7dcc58cd5485b0a03b10186ca2f646b4ed473ec1051e23f37acebae6fc5f7d1073ef79124715e312f8fafabfd6b4971cc91f2071c",
    "signer": "0x7FF24dfd471261490317851550Db9b8fab0c6df3",
    "userId": "1422295"
  }
}