{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7fc58fb2304b67e28f7935e660ef6e305f2dc7fa87b8d718f3b189140d350895",
    "signature": "0xa1451bae4afacaeb25633ca4310b25c53d9fb067ae3b131f480503fca0ad8d725d41cb1468d20f7fcf4d6d8b1e928e6958a590736f4df6ee8453720d47655e4b1b",
    "signer": "0x12d27744B44b8C8C7986923348C2Ec90a9B5fE40",
    "userId": "376214683"
  }
}