{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354535",
    "entityType": "User",
    "nonce": "0x95f2886e2e102e88449fa124abd8f0fc3b623c5bb55dbca1da15e7540915c4bb",
    "signature": "0xa32d3ed0cc6c42645056d30657d68785e152409e5e2178071da139a97c93f2040436698d861fb445e1b1d0930e0c8c7b60bad5ad5a3d531f2aeb5843d7eda9b11b",
    "signer": "0x2d4E313C5C5BBeCd31f664627b0a91361e5D04D1",
    "userId": "106406"
  }
}