{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "976503350",
    "entityType": "User",
    "nonce": "0x96ff87a16b55e3433429f0babafc4c7ce5d2313b0adaf2fb8d4297e2aad0e7ac",
    "signature": "0x15bab8296d2c7072e137448d7e9da0f8218bb78ee128bc793bed7c3a244249e66dd3567d94448f3350615cfaf6ca832611750fe1d5765e9c706fa77747d1e87b1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}