{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xcca5a2d50084c0c96723f770b1f9174a7511802e54206ae77f1f8fe47e045cb0",
    "signature": "0x443163a6ad46aca76fb1b02e9c1e4ceda2e592500b669b6570523fa5d19132860ddb7644b0f50f93484f19d3689cd23a17bc17dcb4945d51b49b39864f57ebf71b",
    "signer": "0xE0EaB915C3153F4a2DF5C6e7b8D58dAc829Fbf2f",
    "userId": "774741623"
  }
}