{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6cef0ba3fb78950e5c5a6d0006342b144a912626e2893382519877ad7cfb3691",
    "signature": "0xa628bb185b076f09ca4f49bbc12de5c0defcefcf7b4af8373aa622a51bf9eb2b776d50f1f3e50cac27ecd9639a71d481333452bbf641306583fb7f22b03c71b91c",
    "signer": "0xFc2286264027B28727C7e474238b7f9273aC7fb4",
    "userId": "502241002"
  }
}