{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389572",
    "entityType": "User",
    "nonce": "0x4e576763425f50b9d9949a81b8cca83a489bd35edbece0ce17e6e0e83d4a2f1f",
    "signature": "0xb5331c68062b3ee65d7eed951bdd24cf0c0f0fc90534f0ca3d7d88fb8ac63a3a41ebd1e688b736ebb83ec2f6742fdd51a99f243b479a3b92ef9aebe944aed8091c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}