{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf5d090a2a9bf6c3c613c6bb7fcda849b6099ef28ec20ad209b4dca88edb8fb89",
    "signature": "0x429b61f6ac41cf4bf93efb7929e80591ab404d40780be565ed526e43c630100c4d4fce23afd4169797efffbcb0a7b7337aaf18a4a1fa6139f4dc49c50b9b72391b",
    "signer": "0x20DD2eBd4Fa6CCD0e13f61BE3B0361fA869D2CA5",
    "userId": "906491826"
  }
}