{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "420647095",
    "entityType": "User",
    "nonce": "0xc292ad281162cd2c991882d3e05460d02eeb80b7f19eab774bc4fe618ccc7443",
    "signature": "0x8e7af72bfc09624bffc9e42a10639a85a38a4d4e994639a2f5f957fc4f27511312d217d047e025707df3de300149150d71ad5a53e99a150786fb52916b33d5981c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}