{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3257",
    "entityType": "User",
    "nonce": "0xc2d9c37b4031a658cb43d792255ea32e46fb746356ccbde46d74220a5493e501",
    "signature": "0xb38a88a15e56dddbb3d9009d40ef80586a8e9ba8b3649ba4fe1dd8468cdb0e196926ce2f4e08acacf0c41f096da137a84e2c65422a94edea0d01a79fb7f1c70d1b",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}