{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1464728",
    "entityType": "User",
    "nonce": "0x2f57bd87821e282d3514b9b1611ad9084705582bb05a41a277f8b424667467e1",
    "signature": "0x067383eda649c8af1f4077126e5be419765b71304891238688a469b538b93a6b0b4d19fb3f2e8b57dcf32a38e883d8c225ad24d1b422c816b5922a48402783da1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}