{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd0c5bc53b36953c45cb40d525871431d98ff06c55b7d97b627106c309f2c6d3c",
    "signature": "0xf62b5dbf05ee24f98b68bf44f9c9f64349d3d2240cf0e468433b5f88f698e62742dc99a0b67f89c13cb66f98d948a71a10bbaff44adbb9003263799400939f9e1b",
    "signer": "0x645517c3248638BaA7a00C7e619F7376Cab16562",
    "userId": "937273443"
  }
}