{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "596750044",
    "entityType": "User",
    "nonce": "0xe61de956a5ccf426a11900e564173d174d58ad1302e60f5b6aa04a054bef1532",
    "signature": "0x7310af694c0f940cd9273a02501eec8b2a0476f32353993dc489c0f3d00a7a8238f4ac357fb8642a44b2f47d440587f1542cbdd833271bbf78732316fac620f21b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}