{
  "manageEntity": {
    "action": "Save",
    "entityId": "484829272",
    "entityType": "Track",
    "nonce": "0xc4d3b48d60a53119c3fb7dc3c08887c786dfc95221e3fa303be4cdd8ba14b47e",
    "signature": "0xd784f0bc41bdcc2b497d1230dbecb869606a22fd12312bfe1029afc088005cce00e3712b1aebd684e288ba9b1d8cebd5fe81f3afd7da3e5292e347f407dd70601c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}