{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4a1ecfadaf18a917b573589b6c252e3fc4b718c1e0e0c55bbafda9ea9670850f",
    "signature": "0x79c7de62480abc6080c743e0a83de33f8caf37213596b20695865f85f7e753e434d83e2961a5c21ddc6b1318f34cfc653044739ca9d10848d17c45bf56015ec41c",
    "signer": "0x90A9206Df4cA22A1ad24bfB7F1b639Aaa812Ac58",
    "userId": "266782887"
  }
}