{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "633359681",
    "entityType": "User",
    "nonce": "0xd7a2fcf0577b4aafbbccdf66f3eb2d34a84b55449c3fbd322d1e7b5062a2785b",
    "signature": "0x777b2a2bdc7c39a668fb1ccd706755b8c3211a26a9ffe173fe100b3214d6a0890152a9e03699b8227778fbfe5da35c80847a62853551ebd93354624deeb18d8c1b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}