{
  "manageEntity": {
    "action": "Save",
    "entityId": "1055691",
    "entityType": "Track",
    "nonce": "0x9eaf8ced403208f3ea1b8fff3c74cd627b295bfad584b894dff8313d6886ecb9",
    "signature": "0x602c27f0eeec03e9905110c00f2112a98db6341e25d0cef810be5d645a7ccf2a40e4023d2ccd9eaf85208671377275283d211dc0ec231e13e819856daef0c8d61b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}