{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "849737890",
    "entityType": "User",
    "nonce": "0x003b2aa70443b96298903b774465ca2e34fa8f553f86e85c1d325507e4c29a12",
    "signature": "0x4fafe8ac66bf91afc4941b1515353ceb9a136b9139d92940644801cbb3078983604e815cf19412ae1ac7a767b4bcd3b9c95faa4211f49407bef5b436458d29341b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}