{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "258307",
    "entityType": "User",
    "nonce": "0xe02f35de3a86001481284806aa5de3a4fb213a67cf59ccf9adb8efeb313222c5",
    "signature": "0xf91b6bb668ff893bcee6b7e1973586539d8cbc70072d60d0abd9a9b0ac4c8ff54b0974d75fe3bf00987bbd4d72f87655eb301a69f4ddcebdc0ead9886b9bb7001b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}