{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "124312",
    "entityType": "User",
    "nonce": "0x03b29fd6a21bbd06f91901fa47f53560ad4543cbd53c42f92c561b211b8b8e2c",
    "signature": "0x2be783584db40c1ca26b288463e5c04bc57b4641ac1a07700d61680dc80675541fd04f5390ecf2b4c8b29ec6ee0332fdb5d06fffe17e11f28fe664fc78e392bb1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}