{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x5f2ca717a30daaed66fcb09dadcdf0eff6060e52a39c01a37e256c7d44e0b143",
    "signature": "0xe171083cff1a8fe74e23e37cdf3126e979efcaa9ef98b59d65e09c44d12016f46e7dd764dce20c7fbcc238f0bfa081643530d5842f4905f9f55ae77a1c3e48831b",
    "signer": "0x6DFC9b2081230853d5F4203e1e3232ed22612526",
    "userId": "535575"
  }
}