{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2017843",
    "entityType": "User",
    "nonce": "0x3fcc094484f7b65b24bbfdc41323646ffedca8c496b8db8a3f859d74382c4362",
    "signature": "0xddafca0eb263644b6269a371faaf725fb1ab98eb40d3dce22696adf1dfdbdf1179ef0a47ebe2be302a67088ef92435b02cc7e0ee9e45c71b08bcfae3d7643ad51c",
    "signer": "0x22Fc85b6fce8CE12f05a05dF6894b4140b7e8bC7",
    "userId": "373394983"
  }
}