{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0ff60bede9296a3b20c1c1051a23ab85c58f81998a16239acd7ca777226b7233",
    "signature": "0x85e650137817a13f726f47ca788df32cbf3c9bb1bd8a00f264ed915863f199b0130a77c3246c4ee73fb97f9ceb965dc6578665c1256eaabe4a496cf42de3768f1c",
    "signer": "0xC470735401Ddd3756d0a420E70e3558F3430008f",
    "userId": "377240673"
  }
}