{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16564",
    "entityType": "User",
    "nonce": "0x2e2ed643f36fdde852a8107aabb568fb38d1d48e2ba50da353c209242ba0bb0f",
    "signature": "0x2ddd97d18a59a358d26baef0ebc648975e0c99230303935c7ae111c0026e1d4b5aae74bb17f19eb92756e6bc3d604ee14512cfaa714355995f24dfcdf9294dc41b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}