{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0xef9b9545eea2f44b4f9049e5dd5f11b310d087701fb198e082781b2635bbcaad",
    "signature": "0x6149de46e304575ad58ff1fff620c3db2ff75bc03ed71989a46fd8b66eeb041c512c5861cec827e65ebc3981668b9dcefc129ee51e0945bacd45b9dd721e3ad41c",
    "signer": "0xa4A8a4853051b18e0f0f777693Ce34CF4bCe9385",
    "userId": "634886384"
  }
}