{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8141445ad07e0b898b5d6214399e1eaa0f52cf098ecea851969670c5055fc979",
    "signature": "0x8344e0ec5ab85b6db38adc0af233e277d67023917f8a82818637b3f1d44b094f22f98d8c9b831d5798d1e4d5c17f4f33c6d3b6fa7327b93dc485d42943c2057e1b",
    "signer": "0xB0dD81Dd254D8c37c32ba018674a7DA5FF536d8D",
    "userId": "412939682"
  }
}