{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x62f15e17ec1769e6e6461c309a65439e9e674e2158d5488187a19ecf923d8dc0",
    "signature": "0x878a90186be5553214ec4bb7e47de3c382ea4723119be66e593f556118a01b314ed44b4d0533753166df7bb234b472993c97c7d596408e7a9e0c8700080a291c1b",
    "signer": "0x27ae790B7aAcA244c689df0FE958D5431f1e4861",
    "userId": "669640444"
  }
}