{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "699855727",
    "entityType": "User",
    "nonce": "0x1c20a7105b45a55d1557c18a70b237269c1196ec0b277e4a17544cdb7cb29334",
    "signature": "0x57663daefa23425ae1af01b09257e3ad5456db17b315a7e99dc29976d2c8dc59489d1924af4a4bb0d9663380631cf1a730eb62f230e708ffaff8de1a4d22887f1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}