{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb5c49cc7f4329218f5c5907fb2c55392008d4ffd8bd9f8e7013b8eba0136da10",
    "signature": "0xc396f990d72a1a48c049f1da3760383ad99e9fd500ee155ba7484938fdb7a79c5956ea9cd16e9bd90fcc0b7f059a5329e9ed2a189aab41748912e9713f707aff1b",
    "signer": "0x553f6162aF0fb3DCa208FC317867b5a4930EFedb",
    "userId": "781219675"
  }
}