{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1866428",
    "entityType": "User",
    "nonce": "0x8b970ba620338322237ce16485f7b5b61cfaf282703ce5d34a6e96b78dcbc9dd",
    "signature": "0xe742c3a24cfe8f7dc2007f2ab13162b136bbdb810173ab15c868018f417952d94eb0b7cdcea5d5421c88606b4e84e5ed4c8c026193e8d7d820baf0e7e12f125b1c",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}