{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2fe9dd1343448a0bed79cec88e2cbeb611592900c52ed2c73ad061ab18fbf611",
    "signature": "0xf15802433b8d9710763d9ddc7248857ff284d85890941dc2fe9593c97d00123548250cbb5a2704377fd24bd152abb05a441c7451aa9e5e75c7de241d10d25a141c",
    "signer": "0x12764976312081412a5D2a854e6e46Bdb3cc2526",
    "userId": "879852542"
  }
}