{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8dff50ba5ef669b675b9d6a4d0bf590979b2400bdcd07a092075d1e9aceb318d",
    "signature": "0x25b4077a756ebdef7e40c0285cc1792df6b7f883cb328da4ce4e9051a556112b3819fe96e0391089a15b8689be77148e0c4c62bc920a479dc8348fd31ed6e32a1b",
    "signer": "0x389B6b25D8bDEee42D514b8eF8Ab6270a0A6fd1e",
    "userId": "186499665"
  }
}