{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe8835dbbaab5292bc9ec4aae282951171e5f7738afeedc1bf75be90b94458ece",
    "signature": "0x7501ab295e66db1882d26d029c9e92836dfb14038c70d20ca182fd916b4934032dfa5435c74bc1a8196628da4e80baee1903a952686005761f9fef6ff6849b581c",
    "signer": "0xdBA5548Db841AA01126C5Fd78d007af63Bd82F3f",
    "userId": "504460753"
  }
}