{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2197",
    "entityType": "User",
    "nonce": "0xb026c95b8c276b7d9f33f2ee9a2eb9268cb681eb5f36e77620aa3b8b0a1232a0",
    "signature": "0xead47b6ba831e54422a7d5dee04cb88761273d9795dead8597e2bae698e7fb302902b1bc624691d799b6f2dfac07f3e3a111baa37ce688e57b9f3ec42c219a0e1b",
    "signer": "0x99b5F46ae3978FB02A645f824e51700B327f1d6e",
    "userId": "97654"
  }
}