{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "904709618",
    "entityType": "User",
    "nonce": "0x97a0cc8d233f64f2b554a93e987548537dbba50d85a46b9b5099903a1ba15700",
    "signature": "0x5c9cc647b2437ac8802a760ccd9dc80c900092ba43cf9319b92c294a5f50c4f409e6a90d2e6a0b02de5b85d9653fc18b9416c85fd033cc65fb890935861909e91b",
    "signer": "0x9FF2A7F5Fab732dA57359bb3eD63a95511bD1329",
    "userId": "67863854"
  }
}