{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2005440",
    "entityType": "User",
    "nonce": "0xc1287b6c69d5f4d35a13b89f4853b6d9faf685b7331aad1cc1872894916e22c4",
    "signature": "0x3390eb8452c0ee1bd2dd6509dc4403e07bc29b922ae3573e1c4d80a67e4678a86752f0eb9154d97a7776f9a2f9f04475b42c4e2875baf55fccbf574c3829a2401b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}