{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "9957",
    "entityType": "User",
    "nonce": "0xc0c497c555c1b1e31ccc01d650d8bf6d4e0f10d5469b83f4482d297ce63bedfc",
    "signature": "0x8930f0b50ad9c26c25b61a977a4a3a1c5eaa5766e1890ae7863a0f9de94e1195516518a07a5735cc07a94e68b1a37b69a1809c4a8b6b138fdc6c879f4c5f64a01b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}