{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7268d3bf3063beeb85c762f133859b0431976b3b002b75e24703d8c8e7a982b3",
    "signature": "0x9cc4cc73f2cf4bf75b4a5bfd03a6b61a9353286f7bbc42f0b9d94e4f74cc209906003f180d951029f288c5aa4f5357e0170a7f2dbb196cdc4f9c9c4ea6423a2f1c",
    "signer": "0x9689e3d5AB8104ba8f965A6a5b4945644cA20FF7",
    "userId": "275143328"
  }
}