{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "603549127",
    "entityType": "User",
    "nonce": "0x20c4f7dbbd2866df5fad5a8337c82d707e2d3bea25b51b492ca16417087eaaf9",
    "signature": "0x6b81fccc834f08dde60c9c4018d3fe6de5a737c684007da668bb598d493f60782e1ae0cc6030106d80f87fcb667770b771b76db822e70dd16bbbc27d5d722a991c",
    "signer": "0xAFe001afa3dCA8F40e5C0f35572E77cF3069773D",
    "userId": "656565561"
  }
}