{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "698685",
    "entityType": "User",
    "nonce": "0x59921d1931fb240275fb39ccf2e13c31c09824f5cd60d610a3ab1bad0acbca55",
    "signature": "0x36ca46f93a0df97fca5ec4134ae221672fce8750da852d26283f8c9e262aebe1172793938c48e6ccf0f6aa4952021e5d7c5a666583789471a8f894192aa79fff1b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}