{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "475018419",
    "entityType": "User",
    "nonce": "0xcb5ef0f22fe84f210df55d66de79e6c4755ef864caf8f0978fcf3d5a4ea6361f",
    "signature": "0x971723bf66cbd54ca0cc3c552dd391f28dab6b7c2f7b9fbd8e6fb2b2d7972d8320abaad5559d6d833f0c07dc7fb55cad9dc816a35a235084e1768949cb8fcf931b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}