{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "536791428",
    "entityType": "User",
    "nonce": "0xb4e8acd7300d87ad8f1b8728dc8d446d422146c219bd8ba83035bc2adaa4f77e",
    "signature": "0xd4dc07e74d5732acacda8c41b5e6f25b3dfd64d6f8c1513ba5332cbc30ee68937ed2d389a346aad1bae69641b131ece7846a7a118eaaa5143160ac4e47cbbca71c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}