{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "260813",
    "entityType": "User",
    "nonce": "0x77415a40770e2a2d7c2c967df862619061f05f8833fbb3ec29f539a2ead8b8cc",
    "signature": "0x827397f3d3fad1184b126e30a4b6e06332cff1c2331b51794b5bf3437381ee102b1aeff669a81296c4ac46c53f1b5478205e3ba8ef4a2c9bff76d61caf12405c1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}