{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1584941",
    "entityType": "User",
    "nonce": "0x539a02532823e45c9efbda1f4ddc619dfb6510a4721aa6b87f7cc49a6a0b86d2",
    "signature": "0xe2de36758c68665d70217e19aa35555d708a9406f18c03722855d79a261538d50d12d72331d24889d3b03df5b9d08d71e8a0ec574517fa7f30b72d740573f3ef1b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}