{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154815",
    "entityType": "User",
    "nonce": "0xf3d312f8fc93849a8aad2179b620d9282d3fed3bed9b5a5c83ca88656adf554f",
    "signature": "0xea7c461c9bad94b8bce33299eabeac7f2d7a03fe7af9d043f6ee151f08dc07a36f44cc8328c0408a1d7e5a5ef3e3f5284a8445e4cb3f642ad4808a99656091701c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}