{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345794",
    "entityType": "User",
    "nonce": "0x2f3ad94db755ea1c0a95c6c29ebcafeb187481959a4be48f928f35d6f4206f7e",
    "signature": "0x5a7351418090535e89852d93805d053b9d5ed00bf5aca5446ee2c7cad2a65ab659dc060523921ade1a1984d6409c68afc71ed2cb355b73bddb94c3939c62ef131b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}