{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "157507",
    "entityType": "User",
    "nonce": "0x89e56b04871733a559bb76dbe2e695ebc4b222a86cdb7dd9d93f1b8a6aa6b540",
    "signature": "0xbaff796740fe773179c559dfe1060ff31da2ffc13ce53e1bdf24f639771512b413d7b7d796e48cb65769d6f4f46b8d68517a591d880a422ab5f28cfdb7b6e6fa1c",
    "signer": "0x28a91687f22d454063c52F6D9d9e6de3A0f3c09E",
    "userId": "190634058"
  }
}