{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1903988",
    "entityType": "User",
    "nonce": "0x555f67549efdc1eea8bd43274f9f942cf2b272af358fdb46948da8e7f43ed565",
    "signature": "0xa56d7058ac34df88eda369087fce1f94509b7a0ee0766b7c4bd49dd4d2e0c9dc003a750b12d981ea1d0f7d62c99e7d754dfac5a6b2b0938e70a46397920b7e981b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}