{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "19489",
    "entityType": "User",
    "nonce": "0x0b9fa4cb3379c15a7811ec4a5994f5951d3385a96956529038a99c25a9085f2c",
    "signature": "0xb67eac6c2f38f7c1276bac47d30ecdd371bbca1f7b396d3637c9556b026c2fbf282e193b744a9981c56de0308c6da5099282b81fb6cf8be5bb4009c7d0fe77b61c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}