{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x757ecb12b99b7c311dda3f3f0e2e8a6cc589850abafc648994671beded24de9c",
    "signature": "0x5cf4c98afa69d27c53b184eef135cc8bb43fe72c0f66b8588003652dd7bc195f0afb7be88f8756081b159935bf065f3da2ef723a0db8a764307c4feec22cf6191b",
    "signer": "0xb15d7053c985Edf1d74fFc9893ab67Fdc2B33090",
    "userId": "211545300"
  }
}