{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "909100344",
    "entityType": "User",
    "nonce": "0xde0e2653529a4f6efd2e06f7e722f5e90fab756b73e2575df0125efcbf107155",
    "signature": "0x0933e5fcfbcc696353e85d6531cc3986186d65c1d541c443122853225a5f635c7ca6f8e214e0cddc86ac943e98021cbb9a4309c2b17ae0376d23f3e84e2b70e21b",
    "signer": "0xcd864e8A0A043bf1B2DA4106C35c1daF234468a5",
    "userId": "784246910"
  }
}