{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x17d308bdd66043240630d78d641897b0d00ebdf2f6e5de4f5b7a2389faa2d1da",
    "signature": "0x69f1c77d06b535876a9555d5febdd061a4c9996a33c02f6c498201330fe9b40a5b6a8c0f88ca3d05ff09667d29f6340c4e67e22a4fbfef0a1c29b858031ec2c51c",
    "signer": "0x4Aa8154A33F33394BA8De574d71aC98Ba6A47D5a",
    "userId": "645720561"
  }
}