{
  "manageEntity": {
    "action": "Save",
    "entityId": "2069261334",
    "entityType": "Track",
    "nonce": "0xc0299e47999ff548b06ede18179576c315e6eee03305fea8bfd3331ffdbd0eea",
    "signature": "0xaab1f8235ad50bc21d9c62f67e962d2d3aa4db99fcab48bbf0088f71b1dfacc82d2da5e2f74d4719590b19cb25775a0e05578461fbdd8b2e136b8549f257a0b11c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}