{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "302796",
    "entityType": "User",
    "nonce": "0x6677ce2b122b79f351914dfbc22376b4a901fe04f4d9b944c8a418d8708d275d",
    "signature": "0x83db2d09b07e20a5078baa58d55a76cce3047b4c76e43e4d9608a76321d320cf67672f33a6df953eab8b62cc39f87f41891b98b1c3171ff506106e8c1e63f3831b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}