{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "618275",
    "entityType": "User",
    "nonce": "0x8712ca21fa608531e25b11e9d6fb92646325fd80235bfc90e5b5b1188b3f0f62",
    "signature": "0x2ad87e91ce7fe9fd27c0d82dff3bed98b421f43e99511b94b18da04991e79c98425930d33f5ab4d6935746bd72fa51f5f68050347e9d3ff67a3b03716fb39a231c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}