{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "609847193",
    "entityType": "User",
    "nonce": "0xd73bee6be848f49088501eb2ec0960bbf9a486c05e4cba8045f99f54d224b080",
    "signature": "0xd00f58e0c02203bddb3707137aff3ebad9af075a593a5e4d569ad940da36f1e72eca61b4ce3860b0cbe41d51d0c119c4716b8e4b0cc14b87264fd003484874dc1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}