{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "627522830",
    "entityType": "User",
    "nonce": "0x566d22570db17a4d6a4fb7e283f389503c05f7f233ccc49687f76c0981dd701c",
    "signature": "0x415f2c74ea1c2cd0d80d56052b2bc566422ee4c90eade98722a0a804da783a2b0680cd1cda7474e6c51493e925d59f4105b04d5713b216824dd96190eab1e8f51b",
    "signer": "0xe2b1dcE37383Da05C6DEcaeCeB1e76b1449f1711",
    "userId": "218728810"
  }
}