{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x762f728f8dd77e72f7fc4c660d8c247eea0608c2568c6ed71971beb747afc49a",
    "signature": "0x3b9937e0fb80082a15abb8043c6e4bb052381b1f8ed1bb09fbf5ace80f521bbd187dff74600ed2347f1f6d1bf886af07dcaa152309124e23343f057838e88beb1c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}