{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "65468",
    "entityType": "User",
    "nonce": "0xc7108e2930580fe64a0c76517b24a66d00282aa89668596728c5428f758cc3f1",
    "signature": "0x1a692869759e0d72a2c65d0ec111a7f6d2ccbcc37d0636f7f0e0bc247f4f5fdd2334cea5a3797bbf7c5050f2c10b84c5b5bb2cdb3e3588563455ddc67d18751a1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}