{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x3ce5258504526ecfbcc098b907d1a2c522a277c182abd7c24e8f358b795b6d52",
    "signature": "0x6bba206372d8a6dc994c1b1bd9e2b6f7459a4c8a107e9e5031c869ae97c399144b83192dc925ea134dd330aee0c962a24db06e0b09608612cfb3b0d44899d0e91c",
    "signer": "0x245cEbC9574d38Ba138112B36a6ee27cFCF48cBC",
    "userId": "75458976"
  }
}