{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "454340338",
    "entityType": "User",
    "nonce": "0xe2e660f72ee1d5811048e057b490739866a287d436c80259d1d2fc27c8bb8422",
    "signature": "0xb5f4d2e0ad1982ac09dfa88b0d4586aff2b2c864b4d08e61b059de821d2a9ec2774c6f58caa3ba7513d67479dbd8c5b7dc67abccc53b11fce6bb0a1fbb38f92e1b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}