{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16564",
    "entityType": "User",
    "nonce": "0xafff019255ae6771b409b682961877ef3236e1f8a03e5699afd5155ea62b44c2",
    "signature": "0xe75b3c146dd33d70845615b7a346b542411eb0723d8ac2c5b7a91c61d04dca701a3cc02535de55f98aa299395cb58ff320c4b76b88b4d62e9c97b8764edca7e71b",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}