{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x22b03ac36e1916ae6425099c590840521c61a3ada66846c68e00ac860dfa793a",
    "signature": "0x8bf14f55c1b6aeba1f980cedbf9d1cf9f4932763f1fbad0b8ff90a49a35b6fa5210e103be5822e37d021ddeb9e0abaa17f2505bc235e767ffe72b0c5108b95ce1c",
    "signer": "0xFD8659E4715De55838a1954d2D0e1132BC5FBeCf",
    "userId": "992500735"
  }
}