{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "498263",
    "entityType": "User",
    "nonce": "0x20e49c0a2fb8cfcb3ffdea412bc62382d6e81b0f64808ee1f221337190d67d89",
    "signature": "0x5f553791b93a6d74035117b0282f9ab39c6924fe96810d73aeee2ed557678fab2f87e9eaecc56b0918e60aa05c555892673b2201a37539fdc6e7280fbd92bb4a1c",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}