{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xeb6a40bfcbb2dea9197bcd02a54fd6e1c860a6910927cfe816c42171de830dfb",
    "signature": "0xf244e18c29d2c7ade65b9c732cf1e68c3bf021fc50939b2fe9c6e6483d337cba51715990c661ad6594c22680af98893140a32c9f58d9d5b3129d3205e50ad3d71b",
    "signer": "0xC8Da9e3a28e94B69fb2186A9FDe2B4ceb7D31e15",
    "userId": "700747494"
  }
}