{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "30430",
    "entityType": "User",
    "nonce": "0xc6b37c932387cd336a91d370b47f0d85bb09789b6b827bbc4e705a33b3829593",
    "signature": "0xad8a4ffc8514b207cf6fb26938049920d4fbfe92f41ee1043ad3b0f3f605179e1c6d5f251f00620799361d753b3e13cb3a3014d4fc0c5ca6bd52281fb7c191db1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}