{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5d4eae45792d23a4b7eee07b4682e50e9c64a359d23b0e8971baf46a69ad8e40",
    "signature": "0x14a80b066aaede383643418b1e2493f9475e6d972c82dd4d13df39f032e76bc66ca2d9927c7d912c7eaea8735d10db95f5cff2a6900414aba7bc93c519ec408a1c",
    "signer": "0xF3acf39A68d3E3a503A5a3c69724B60600Ee9ACf",
    "userId": "650818391"
  }
}