{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10103",
    "entityType": "User",
    "nonce": "0x27733e2e52ae0c40b4349f2d3f461d53391187bc9bfab61ea2c751cbbf9c2a5f",
    "signature": "0x146642b4f48d094dc22d9e3ebc78ec90d13cd80c74fb0cb92f9f51af0c6f99783bb9f94dc861b19b454c0e3ae410201cddc99da9f5c7fd8b438192fb81607f511c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}