{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe50d935dca762c02dd4881363a31dba4bdcd1b048838df5914437bbe9833ac60",
    "signature": "0x56d77b11097898dae1dcb92dba859d6a68b00a5a9124308887c25fd2852fdac7108c09119b5d1a688da3a70a4fc150a50a12711b139a787c075639373ab4ac4d1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}