{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "237217",
    "entityType": "User",
    "nonce": "0x4b7deba89300354bbf8739fcb2740e882a8496484e40b0762fc39c4cd5d7c7d9",
    "signature": "0xc710c43b1c7afa748c3341de48d19a6525c1bc585732db628daa76197f8671f663edaa0f73cdaa5c335ff0b288831cc102f82833ac1e489c99e78260279252781b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}