{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "344158827",
    "entityType": "User",
    "nonce": "0xfde65e7ce0b1d6a49f684108ffbfca1f4b7f3073b1c18e292231197eb7124847",
    "signature": "0xf4f50a5ee981d033d97bf95947aa2d96db0306466ab06ddf19987d0adf10b57f6954c1e5cc4e8bedbebeb1b303ed3991054a251d3a083f2de70c873aeaf34df51c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}