{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "872998",
    "entityType": "User",
    "nonce": "0x4a8c410e965e174737a2ef5fad41043edc4f6e1e42a605f69c5fd540898f6b08",
    "signature": "0xf512d4ef407c0a2c2a0f7e501f76c1ddb723dbe978fcb2793a96a1ec4ebd0d674cb8d727a8dc1186597ae3f3a29201be02a6507dc8a35202136f7b6bc8d08a9a1b",
    "signer": "0x49368dB15B9A78dF090195AD4338818bfA70C88A",
    "userId": "381576190"
  }
}