{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8715827a71a9a4fc5bd132cb2d3204c47af479acbcc0b264aa1fbe53233695d0",
    "signature": "0xaeaef87ab76bfe26a6d0179b4ea4f22ba1cc07cdfd7f9816458bf02d667c473d0b9984d0af288addafcf959949cfae8b1afafd6139471a7da328167a412e0f1b1c",
    "signer": "0xf987600Dcfa922FAA7E2a89669A71a87275fcab9",
    "userId": "67144750"
  }
}