{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43430",
    "entityType": "User",
    "nonce": "0xebf6c30712e9674a149618fdfc0253f5eeba74e69008b74942bad82b6912e532",
    "signature": "0xdceecbd92cd901810ab38364e1e86e9c8a283088da7e7befb3e821d41acb33e42d85c261b4e6d2ca1f30a31e3d4616970ba245e85ba8cad598a5e7bdf4e0a1101c",
    "signer": "0xF300c20BDBB459E009c4E55c08CFd33E12f8B0Cb",
    "userId": "782218508"
  }
}