{
  "manageEntity": {
    "action": "Save",
    "entityId": "16319",
    "entityType": "Track",
    "nonce": "0xcdb22b773a27015cf271e7e0a2f99305918f23a289293cb8da0de2eccbccad04",
    "signature": "0x4e4ebd27739bd47857fb6cda252522460a257d40a6846289e3ca40c3070bee906821f4e31063913cd4d0191f0d6d16ac595aa11739919ec71adce0d187d83c4d1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}