{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x97984dc3dcc94d9f26c12ceaddc4fc4ce3ccf99c9311374ce185057287401e1c",
    "signature": "0x8dfe6c6e75cf8aa55b300cf5fe2069bfe2ab29d90f4374664bafb531b3fee5c058a61959f0e73867170d258f6bce37c3e5005e7dd6c81e3a9b202dd011ba73ce1b",
    "signer": "0xC38A1c94E04EE9e85ebBC7acD3b5566D53fFC4ab",
    "userId": "507747752"
  }
}