{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "217780",
    "entityType": "User",
    "nonce": "0xc61bfe1f7d4e2559cd200742b0975a3d71c43ee4d0c92772785f06dc840a35d3",
    "signature": "0xa1b77f35a4e0b5268442e24a2721ea593241a40f8adb7ad9b5f8f3139a9c6f3b0baa243cfb1184b88851700f4cbe5bacf79a1aadf8570aced3c8c81bc6637f8f1b",
    "signer": "0x866CB73184a8420C302e3850B610761F882C4DDE",
    "userId": "166428182"
  }
}