{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75740",
    "entityType": "User",
    "nonce": "0xf8149cd320d63ddbc5be2d354336905cdf7adcf24a63df53ae5ffa116aeea627",
    "signature": "0xfef59a91513271ed62b4c06c9bcb13bcbc1a7b4e671d39dbd59a221a6cb88e9a240ec104181175e4b5a13b47ae6435b56de6d4e744f0c4c4618c195cd300b9701b",
    "signer": "0xF6F9F433Ab5dDe3c96D63C2fFAa64b610599a410",
    "userId": "80682"
  }
}