{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9e1ba7dca2d779117720f9d80fbd32a76711b9ab2270f0065e2ad406c46334b5",
    "signature": "0x94b59585779b051e05769a87c0d402dd706f8b409871997d26dc754679c01268734266de66602b8267b10f80c4b1326a07f04202fddd7a7f5fddc801bba4ac221c",
    "signer": "0xcED3bB41dC25f9Ee71c86D77eF68b745550f8C9B",
    "userId": "593392725"
  }
}