{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "752389",
    "entityType": "User",
    "nonce": "0x1cf62719333705a7f83836806ae7c145dc529723f5a734516965adbe0152fbc5",
    "signature": "0xd4f36a9e959fb5a17bcba65bd439d105a624c1184955fb8684eb7979e7ff30223584f91f44854acd8c714b424e66d248da46f6067a21511bdbfd19eab2f08d0b1c",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}