{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "406225571",
    "entityType": "User",
    "nonce": "0x6aadb07e1dd4cd11a360e3085d2a80075ec97a7f6855d9e7bde3742624276e67",
    "signature": "0xb68453c7f99c23519722d0e57a0eef6909e279126f31f1c60ca55d2a4a81a5681fbb1fa3667e06446e8cd94ff5f29ebd488c3f71f4a60cc0f35a403989c3a56d1c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}