{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x69df0b9504f54a497dd0dd68c136a1469cc8d547942c43c0fee8125847c3d96d",
    "signature": "0xe318127afec96447b5c3f2272ec5fdad59efd4638984679cb88d65f1a884c2094fa1d52e5f30fcf407a1e568feb8b68934f651557d83f7f7f0201515bcdaa8b91c",
    "signer": "0x9D360ECE27645E249fbb45fC03AeF953A81031Dc",
    "userId": "579726392"
  }
}