{
  "manageEntity": {
    "action": "Save",
    "entityId": "159641",
    "entityType": "Track",
    "nonce": "0xfd3b27f345646cd5b0d04bd9576469c87f21e7922d0cbf186bfe8913d39cf029",
    "signature": "0xc362f6a61da6361b6765d7153b56a2df4a9df6e657d35669222f65c04438e005195d5564bb8da8ec93666022a9538757b774e96a484c140b8fd8c9c11fd583fa1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}