{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0xa21d7dc40bf01f0dde0c2ec1c3f762e27ca6513a241ac67916e5959f51f314cc",
    "signature": "0x9a403009bc4361c1a5f65889f1459933ca3f5eac3169c59722bcbe20c14e399806fe1ebf57f198d5b5c01d8289792314e0b4178f3a34cad6095ee25a38ebf76a1c",
    "signer": "0x54Bf4bCde33b2E24Cb1027FcC9d725FC4a7347ff",
    "userId": "138114417"
  }
}