{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe757450615d05e8ca192635b0abfff54ce339ec6e436e3286ac8c9185f589a34",
    "signature": "0x5ead4a2613f2b4c72c22c17fc431dd017b446f5de8816668d71a071b3b3782cc4f6cd8bf67df813844170aa0551d51143f847b950903d0d2f52f178d80f48e301c",
    "signer": "0x0A12991752297225e963f7A8114b3d183aae77Db",
    "userId": "969021050"
  }
}