{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe355ce0014a0bd69dfa7a1b2f5a74d9a93ea822ae48da6e0457a6b4ec2fc8b54",
    "signature": "0x3bd0c313650970a265f04579413ece695765287a3d21c8e6ea0340a24b28c94c7352abaffb8f7e984c6c7be6c649c46676bd9d964311129c2294f9cf99fe4fa91b",
    "signer": "0x1ae8893A5BCB11158D8e509Cf7cd3a744d8ef8b0",
    "userId": "610742201"
  }
}