{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x346affeca3e142943101f38e17c1850d54b022f4db183f3c3d7274308e7fde6d",
    "signature": "0x96adaa7983f8f2137021ddeed5eeb1e6cc38d31ab170256bf260ce493c4005380541ce119e689062682876bbba0be0975750fc0144791067aa6c8a66b4d1d5d51c",
    "signer": "0x6667a1A099d3e340AeE3b64579cA139546d87216",
    "userId": "915459340"
  }
}