{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xad01592a9beea39b6f9c0e8e83a3155c2d4752e770e221c682c86361b5640861",
    "signature": "0x7687ddf783ad8f5044374b7212f80a9fa71999a6b66b3c4d4a85f8096352ee1f0b0b702b83d6ec44d2d35c740052e2c4c9c66c63975e57718757cda1eecde21c1c",
    "signer": "0xE875233Fa664f00Aead676c839Ec6dE0Fa98C3BC",
    "userId": "829998881"
  }
}