{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "273237737",
    "entityType": "User",
    "nonce": "0x9bb9651b14a16209a98576bf5ae44e60d645e048304b6d257a597b01d68da93c",
    "signature": "0xdf0e3d0a0cf97d39d1e580cae059740bb3eb00cfe4866a358f59797b8ce28c7d5e64abcc348a7423739839ff18555f7a961a3a43a4d80427f9d79e2da9915e991b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}