{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0xa6a37f6bf83cc7d875e3d8fc48bc570d93fce32f75a1b5183ba5f1207801ae50",
    "signature": "0xc7638f99bc87f82ff32c60b36d0338d351f40fdfcd6a59d036d06ac36551f6a342eacd272216894ed0efa86e8e00a44f1d4b336b4661897a6a1a8ccc89db548c1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}