{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "487640022",
    "entityType": "User",
    "nonce": "0x8dcc16650946e454dc5e4cd55e9de8896ce5b02dba67afa9acd99b494c407ab6",
    "signature": "0x77d9f10e7c55501866a7025f416002804681657d11e7525c0e1314721e01c2592ac9ac311f720b69a0285b2e7c6df36494aed651596570c7c3e5be879858dced1c",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}