{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389839",
    "entityType": "User",
    "nonce": "0xf6739541cedf587424e8232ca73161849da3abf2cb5049840601d9e01b3be639",
    "signature": "0x16e57c7a62810566d389d59f7100d02b7edead11a20100805fb9ba33776e5a672d22defb8ca598e0aa81ee86f9f3bfef10f38d6b17fdd04da66cfc4cc4374a921b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}