{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "463524416",
    "entityType": "User",
    "nonce": "0x2372220c576a371d514a112ef08c951d7c421992852c9b837984543bc6ff4817",
    "signature": "0x4a29e53750969d7b24aee6bad70562bb40d8ae66cb62a1ed0eac9bd96a41f92900a0a4940926faf28bcb8c8013873afd06d2e9672461bbdd0861dc5c2d77aa071b",
    "signer": "0xe0f1d0Ca199D9bec117385Ce8D99EEF3b6CcB37c",
    "userId": "109379"
  }
}