{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "145285",
    "entityType": "User",
    "nonce": "0xb3ab4adf6b1a7d5248a86c9adf6d4a25bdc4a9e10cefb53486a9ac744bc328ab",
    "signature": "0x87bb4b00516798d6eccfd88db6a231bfd3f2282c57f0ea366b31af3d62d2b55e43d406a843399ad3725705ea7851f9814d45439f0165158babb645a27de40c4b1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}