{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77551267",
    "entityType": "User",
    "nonce": "0x2404ccf69ca477919f89a4f863e8ff40d2937f337d692fb1ab84ef4fd56bec42",
    "signature": "0xcf1e5555a8f492bece10a7ea1144a7c5c3663dc6a4b40bb6c172a087764b37ef71086f1607a323a136911c8e1ecd8cbbf60627531e96577550e8e3e785720d191c",
    "signer": "0x1FBc224307882c09fe4d9D343B53A365Ef6577B8",
    "userId": "153928"
  }
}