{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390804",
    "entityType": "User",
    "nonce": "0x1ee65e385ec479bffac63dfbd2133ccb3838c717539eecd629a8f1b3b1a23e4a",
    "signature": "0x0be70bec7e4b85f71ce58d9294001cc7315ca5518a6d40ed8a6bba16e4b0dd040b1d5978e7ad5cce1b3fbebdbdd375204a6d65f6630ec9032ae0b8d0d03990321c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}