{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "108474",
    "entityType": "User",
    "nonce": "0x020c5ed66838a0db1064aa68785c8595f9cf391d19c7d138077acb054a54512c",
    "signature": "0x7d06bb18bc997460065db0a3de3b32f9e05e30dcc7aaead5cb3867d93dacbd613ea3b4bfb35cc549ccaae44064bf6ef39beb0969f3c8d38aa77a0a74860742fd1b",
    "signer": "0x33c702d534707f8Cada5DdD521C5900827973f1D",
    "userId": "5642"
  }
}