{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x740a89cd6c65816db008ecc4b8594b4ed918974b8988b2f22d99708a3c99d2df",
    "signature": "0x4dae8c65ded8a333bb3b057c26508b8b6c2ffcf4cc0edb5343b07510c209a08145421142bdc9da1c467d828b9ef7376900efdb4a20f03a2badea900df49a81be1b",
    "signer": "0x9e9bc4E1DfB036d51529a3c4D15921D4978e02b6",
    "userId": "294621459"
  }
}