{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0x7962ee48c666c6e077800ea5e70a21b52b0525cad9e2daf20f9541af0517c68e",
    "signature": "0x36b5ca7ed22d34d0795088620a60626a26e77cf6892c3ec3bbbd7bfb770ae93034687c37a7e948b3a0ab4c693c920b2fbaf70b4366bbb1338075e85bdde7106e1b",
    "signer": "0xE09A95aA63d8B1AE975406d646074B73ffBD4ACC",
    "userId": "27841"
  }
}