{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309421",
    "entityType": "User",
    "nonce": "0x6dc49068e824695b90e8be5247c0ad3d5eff3e271ab49cdae98bce6283fa0715",
    "signature": "0x10196c7a952d00f9343b9ac1ae3e45f26b5b916144eb5420ba8943a77f42a7df4f37d9119cfac68ca9deafd609a3f914781f6e14e91064033360cf3eaf46c9751b",
    "signer": "0x6818B889bFEAe14D2ADdaC4dBF0eAe75779d7Ac4",
    "userId": "341292657"
  }
}