{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887242445",
    "entityType": "User",
    "nonce": "0xcd51ec036f50b2c5251f821a4bb269d3fdfa7d766b02d9866990b2b8620b4a16",
    "signature": "0x40b9ba34cc4646ef4004163b664ad266e4a8fa2dd21ce6c487d57fa4154f141c17ec73c31fe519fa5148b1e16a208c8075181e4cea4fb2c35904a5721a04f1191c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}