{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x8d6a20ef4226a5adeef1df46ad44af4ec38d6949ad6dfdf82c78557b0aba3648",
    "signature": "0xec3154d7034b62f775fa3146c44cb67b4db63fc3ba077b129fadd7eeabfa725f0d469b50ee94ce013369f9dbb710cf890ed991867878a233756ceb297fa424a01b",
    "signer": "0x7e4a5037718B9Ae6Ee00dc6C5dcEBd04e956C023",
    "userId": "724340890"
  }
}