{
  "manageEntity": {
    "action": "Save",
    "entityId": "1785086684",
    "entityType": "Track",
    "nonce": "0x0ebd906ba50b39e63840985e59b3b3164ef6171f1de5935503825aaac1c00fb1",
    "signature": "0x87e6ab9d37817243bbac0fbafa1ebed957c632aaf5881ea5da4e0ebbe198f5b21346e8933533d4ca8689b95bc5d149b8c7cf0080528451d6d0cc51c3751f19651c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}