{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75294",
    "entityType": "User",
    "nonce": "0x91287b513733b41dd0b3100851fd571701495eaec0e91c1b3955dd10d9c5715f",
    "signature": "0x987e9215a92aa2f4b6e8fc38572207b616f4191daa53b0b4c05e6e423b1c3b501f94da0edcc8a5353ee69955e05b5a8f6375417dbf0743b7a391862268ecaef81b",
    "signer": "0x367680E9B4EfE77a6636091FA6c2c71749Cf7C60",
    "userId": "40274"
  }
}