{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "554506",
    "entityType": "User",
    "nonce": "0xb798d836b75ee9799a7149ac819ff4be63b9c2ba7bee8fe302a8b609058e7afa",
    "signature": "0x1e67fa8e710de2eed07e79b383285751cb04f1960a1e80ab9ea455671819431c10433ff0b877dfa329185ebe60dab2a622f78ef6df50c21ac27744fc705923c81c",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}