{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "432403592",
    "entityType": "User",
    "nonce": "0xe19891022adbb2d56ce62971425dc8cac68371eaa031d708bf78ade8adb820c2",
    "signature": "0x31ac5128abaf1f9e31415aad88c2301eb74cfb1cf337454192e8edb796de8ae11a5bc2992c5e7f5cb0716fc041a720e14cbb81edda5a920fe95d9f549e039a781c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}