{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "776994971",
    "entityType": "User",
    "nonce": "0xeec71786bf4ac43b1a6da25f3354978a3c8ea485589599505575c6fcbcd5d33f",
    "signature": "0x3e856e3f0ae3a4d856162f3798645c12f2ef547b895b29be34640051812e6bdf24f8dbc38eaa367dea049ef958628964e5e70bd2a805b4314b8800c3a7e8a3f91c",
    "signer": "0x49368dB15B9A78dF090195AD4338818bfA70C88A",
    "userId": "381576190"
  }
}