{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "108823",
    "entityType": "User",
    "nonce": "0x7a7a15af55b9ea26662664bd5ac7fd9a09c5a4c2dfaa6dcc4876995293a6a2c6",
    "signature": "0x6c13ab1418dd445f619ca89eac55aa3df2e98953d3471035b52140961ff38c463186a0a38a339be597928fc0041e090845a84b3b197073a2115f7e6bdc208e0d1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}