{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307338",
    "entityType": "User",
    "nonce": "0xbb7ff0922787fa624d10c8ed0e150edc4f39b612398620293e9f3a55894206dc",
    "signature": "0x6fa3c13e24c5ec0d09d230192c429d77fd8f8aaabb525d3c569624d786d07f0623e13f16647f401fb3c4c93fdd3c18cab1586ead0bc531a2dad35924a101a2b21c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}