{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xbafe2651b0ed7ed574d678cda6265a75bcc64c512a069c2e6cadd42171d6cea4",
    "signature": "0xd4c7cf3b64c327b92d6323e2e980fa708f9eb1e8edf5cd1fd3506919f94bd6806c17756721f6b165e67f5d699d6f2bf1a4d0184dad6ce3de82a224334228ac941c",
    "signer": "0x789F486f6C0BEcF3D1E3B3D82c61D526Fc7Edca6",
    "userId": "57299423"
  }
}