{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0158653ef7697cf0e83e82d7d82c1b9876a02cf423119e39bd1514028f6e82f1",
    "signature": "0xb5846877d49c25e220a9e5ea4c42082e6a1e73ac292d348317662aec870f5edf2bfd7f01bb63a09e2b886fad445a0d4d5307d5ab62acbc61e0f20fa87cdf76e01c",
    "signer": "0x191B6Fd957f517929075f1e49822818e792FF015",
    "userId": "74652"
  }
}