{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670988508",
    "entityType": "User",
    "nonce": "0x0d0e6dd0a0638ded8ceb7ca3c222fc238bd5861aae7458fd82939c8907fbfa1a",
    "signature": "0xdcb1178321a168caf371a3fcfd4b6cc69c221b6c541f73f64b6b3225d636a4da5650b00ec7a661b9231f63f3000052400a591b308de280b9758be90762559d821c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}