{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838777725",
    "entityType": "User",
    "nonce": "0x57497456372d9fc7d53414c6cb57004052acb10671580199efa4a6c4ebbc77eb",
    "signature": "0x9d1c4a06d86acaf8db5e57a8201903aac9159c002dc3ee3ca71ee854080414195076418dee3b356319f241c65e5f79a96b72ddf67c66dc3be465dfc761f92df01c",
    "signer": "0x9D360ECE27645E249fbb45fC03AeF953A81031Dc",
    "userId": "579726392"
  }
}