{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "737331",
    "entityType": "User",
    "nonce": "0xe111b41052ae0367e214b961d2b24678539436e9518bfa409e5668dbf6b77322",
    "signature": "0xea3bdccd0323f57c1bee3a7ebfd5b3c07e13129114b8084013e48e82162cf6741d5488156c8cdf23826017092380b9456ead150af6b2114fa8527be236fed0291c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}