{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200945",
    "entityType": "User",
    "nonce": "0xe2393a1ff3027a8b48e81a5750f11d12fe257e09bb650eefa71ed452a00a56b6",
    "signature": "0x39c4b03bc25b78078219e2e84df0c153e7a381f668393d475a0b3f599dc7d6d75dd3d9e1ec3f2a023aa98be03f7e85e507dceb533399eb9953255a66ed0da7fe1b",
    "signer": "0x138B6ac6EcE2bea5eAb147DBdDe9E1a09717a3b3",
    "userId": "736985209"
  }
}