{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6ec32582309b80351621301cf6ed840d156ad432754f408145b70944f95aeef3",
    "signature": "0xef8c0c6ddfc394211c219037336e5f4a4b6ab5cefb87c5c51fce375ed7552701543d5ba1df4671a1d3d11bef889a04eda8f0975133405b35cacf14b3ee283c6a1c",
    "signer": "0x1CEB9515aD44e3435E0A2900f1FeCC744840DffE",
    "userId": "862635897"
  }
}