{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x710bf963249a1d75910a633747cb670beca6a149c957a265b309defdca0f9026",
    "signature": "0x8838dc6d685b144edc08016b4512c02f9f02e794cfaecac405fcff74a30ac80f57ba83478ff17cc76eaa6efc8e70a5308d6174b9163076fba7faafc4f052b5bb1b",
    "signer": "0x4E81E12424774b807a997E28d48B806a16bA88a8",
    "userId": "342203446"
  }
}