{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfff678c39027cf49ce6eb773b52aad6b9af81d22f455d44ba901391db6864aa1",
    "signature": "0x6e10e367cd9f621c52e22a7589104473816132974e90433b34bd2330e749395a6984001c5649cc175d20fc8a02e782059af9e20894585c1c5c4ac947ad9085541c",
    "signer": "0x1Bd1aB857bd91ca351Cc91d8dCe3644C0B43B6CF",
    "userId": "875266680"
  }
}