{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "884071071",
    "entityType": "User",
    "nonce": "0x8e4751d5cabf766d3ee7773bf063c2148c5629f17cd32df7771211d0a979acdc",
    "signature": "0x874c808e4f32c3350eb7c41552aef1ee4c77313cefc7e71768bf922bb0fa2016724b07517668ed2fa815e2070bf2f2326bb47fafd6eca7852542d9bfdf7616791c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}