{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc427bca952bb5e0705adb3da000aba1ec32daad16a1140985db9993a49b60cb4",
    "signature": "0x9a09b57ca36c2fa4b4d33cf9a525ee44730c6e29610fd72ced6fc193885542a03c6412c2fc6ef6aab86908bda38d8ffa4f3e30d8c2518c93839ab29c34cd7d0e1b",
    "signer": "0xb15e0969937058c681E67343137f40F72F50d99F",
    "userId": "790717795"
  }
}