{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x09537bd65bcc2ec9e5e5b12cf9c8674dbba84f4185c1a98f6cc06a8bb7e8719f",
    "signature": "0xf03b50b97b0a3839638613a24758e9e9ab5bda15b19bc312bf17a0ae803a896d61e26db6fcacc81df417f8f3403eadd261d7bb077a6e9894d4f34d22b45972631b",
    "signer": "0xC728d461208f32A72c509e176ED6ba54c844099F",
    "userId": "176232909"
  }
}