{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "99443",
    "entityType": "User",
    "nonce": "0xacb1786eb9f2fc16f0dcd10fc368291890326ef4d4f39910d3a453cce21e4033",
    "signature": "0x0d7964e6fde0adbd3bde61d10ca16b1f7d50126658ebffc3168346c2f0e7d58850bd94edbf0c70b8dc19bb5be7c7a920d9c21b37d1399f05e2ac6a11fa62dc631b",
    "signer": "0xEa3dcE1dCa958ff05294971CA40a732eA317E7A6",
    "userId": "573967897"
  }
}