{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "128508",
    "entityType": "User",
    "nonce": "0x73b886002a0e68a7432f1b4f739b61d93e34dab7905aa6f6f8294ebd76b93d86",
    "signature": "0x4b697307e65c7e14be109a41ccc9ce1dab0e71cce403cb9745da63f79fd383b00f771c8921309a6acee145b40db06dbfb12c386d26a6e75229b8c05385c396531b",
    "signer": "0xC90e14007305577f04e5F4f5542B2191bB2c7394",
    "userId": "1856608"
  }
}