{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987974477",
    "entityType": "User",
    "nonce": "0x01693ee7ca60bf5b98840269ddfa755d9b1dbf2f91effc7e5d698c055a2edfa3",
    "signature": "0x65fbd62cb35931dcf6c41c0b2f28f6b302a5769733c9ceb43a9b4e680d4651f520431ae6659b4861a40a550493c1cd1b007ca14adc0bc75ec4734007d6a67fe61c",
    "signer": "0x3765700151BA1793CFdF9F4ef4c8fECA3Ea076DA",
    "userId": "957835565"
  }
}