{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa569823ec9787dc7951d2aa3b92d7abe7ba3bf439ba51eceb35a88fe0646db19",
    "signature": "0xcad03143cc8cb9cfad26c7ba77734f0b90e40cd54d28d03c605f86cbc6ac97411cfd308fd39c34c5f9ddb23eec6a766c84af3588b3cc4855b5c8adeb79c17cab1c",
    "signer": "0x10A676761D15b264dd4129304dEbb659a6522Cc2",
    "userId": "759056113"
  }
}