{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0xaf1830786a7b9af8f3d9f38bcaaae582fc1994e3821e9643383fc5f4c51f10cc",
    "signature": "0x1f39b1633f1b33170df2286f5182b3887fd1de9e08fab7f8738ce0df0b6cb937734aab8da3190bec0d4697369964f264495c08fc20cfd17e15e1da4ef733d3551c",
    "signer": "0xfa0b7c5C31eBA7622AfE516eb7b8aD45EFB4BD28",
    "userId": "734513560"
  }
}