{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2d504b15483134cc8424221a1608c777d2f64dc60ed636d8cbca564a175b90d0",
    "signature": "0xdc6837b8acbca2406522615ce26fc49315b6547668aaa998eba1a50c13ccdd14364220b9ed5a03a65860842e155ff61b2aad96a4f152140e6358d281cbc1fa421b",
    "signer": "0xe89B4eA46De23545E8AcB929115775D26A5e8a8d",
    "userId": "539962318"
  }
}