{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381932",
    "entityType": "User",
    "nonce": "0x3c7f8d93acc1e6b36b04dcce5b4f538ba5ed504a71d8f80f9ed2524e8b1e2236",
    "signature": "0xca8b77889555b2078796a36078a6f9e6767768b370ce940cdc81bf01c18845c84d1b92de9942240da1099196305f93c13f95f2abab8e6e459bf3d5c785a98e1b1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}