{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x16d03cbf75843b9c1403b9619661f673be00fc15fc47c8598989de3f48a6cc6a",
    "signature": "0x16efb45ca866db4de130f37d7f4b8cc6955ee9f2829a63a86ac9a66460b2d58f1fed0d94b7a307d06c835cfee75c62d737ed517dc0fc42b6cb828f31bfb06a1d1c",
    "signer": "0xB9B934545de6131DbA4b3236bEF5E2c7E14863A5",
    "userId": "174796894"
  }
}