{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "163171",
    "entityType": "User",
    "nonce": "0x53cf54530018ec5f65c4c7b9c57353cc435c2ea988b21ea2a9972f3609425628",
    "signature": "0x46193bf5a61d30d20bd565d6b830f9d7229f60855be079c02fb1d886822d9afa1f9a7bb970417a71ab58dc2ee9b9dad40f9185c65f3034d238287f89e77630b01c",
    "signer": "0xA3cEd4452Ec88415B96DE1F0BDfc3a358cE048b5",
    "userId": "387447420"
  }
}