{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304857543",
    "entityType": "User",
    "nonce": "0xf171ca0adac4ebd04f861cb35efa0471e8efd76b227bdc1f04fdad2df2d70f13",
    "signature": "0x6193dddce2f620b0b1faa0a635cc64364f8f3959d7d5a0a9df845a70937198d2629d7253c3d710b916901a9d401c0d3c2beba14b1089fc1b482a6fe7390321471b",
    "signer": "0x7826D8C3300c86848f302654e47C558A74E7E8fB",
    "userId": "84390948"
  }
}