{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "509315937",
    "entityType": "User",
    "nonce": "0x26b715b67bad7dd4b400a28357cb47135406376096408b26495aa5f7e4e9d093",
    "signature": "0x0d767c22280f6693e57028d96ad068f56d5c83bbbcb851a91c4da7479803e64650dfd2e0b3cc57545cd0c51ef858043bb03757d42fbc2a6aa358fa67ddfe353b1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}