{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "698772",
    "entityType": "User",
    "nonce": "0x9e01e021c0fc483550f9b081e6b29650aee4e0239e0fbeb848c961b333f5b66c",
    "signature": "0x77f84dfeeb3bfd3cf6a62481be5a3d89d345eacb91ab1f83186312b8c30b317b0b5906fb11ede6930d5a7eaf68a7ba561143837cb264c15290a4800520e39ac31b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}