{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "140186",
    "entityType": "User",
    "nonce": "0x54bd7ec2a6cf4e06298d296dcc89df09fe640b47cc6c068ca154fb3505883ca2",
    "signature": "0x50da0fa2f05ba8e10fdc479da6611ec43e1eca406be6f86c3d697169442a808f5b96e170723305ef8c5b0abb5ecf3b81bc486414baca5367846c9d22ec73a0921b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}