{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfdd89117751e9d17d67efa43a9a07f04d137a9aee7d3e2938d5612640ac9e07a",
    "signature": "0x7ed38780983098c62d7f263ce0055de0c7d5d2603e5426e49beb81c2637ad41020ed6c32e333100e0aaea2090b2d704892b121d34ea6a208dbbdf92082657cde1c",
    "signer": "0x7509F1979235a6748b215174634F806286Cf9729",
    "userId": "986457349"
  }
}