{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398460",
    "entityType": "User",
    "nonce": "0xd13da1c558d5b9042762bb21c5c2f9b11a1fda004990eb5e897375d3a3c8e0fd",
    "signature": "0x038815e4e588c2ed02d74eb43eee8c91dc8452e8a502e5c52a72bd3846e9b9e23151dbf0151310a0716b2d2690a598db471a3d840b917a3e1ba43595ad8188701c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}