{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4f0e3796323cab8451ae7485f79b8c028e963af23f093e4e3fa2ded44d58216e",
    "signature": "0xfbf75d8be92dc0ae5b90b659f31bf79d88137cd268010f61ea82ffbf1840625a5311028763f64f16e8ec857786f1fe82034c3845f9df16112dcdbb28299172aa1b",
    "signer": "0xdA9FAC13f52c17C45A4c6Bd56012a6bffe40a362",
    "userId": "307803001"
  }
}