{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x9b6170bf67c28d88adbde106d40fc8be5d52135733e76f0a25b35119e6751b85",
    "signature": "0x76627cb142adcd0c054bab1de329fad79685cbec150f1af206cd0de754c0c95f37f79b19b7f4a161a22485171bf22f9152502735932f0acbd85c44fb4d4dc0a41b",
    "signer": "0x4Aa8154A33F33394BA8De574d71aC98Ba6A47D5a",
    "userId": "645720561"
  }
}