{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "426663880",
    "entityType": "User",
    "nonce": "0x451d70e48240f1db06062d74ed59b00e7fcb2277fe9791b3c29520ea639e0527",
    "signature": "0x395a036b2187c625e44e7b6260607b0177531e4e2773bcd3cf17e2139b2a71911b23ced0594cc2d3f150e254f8b433a1077bc0b43f354bb53d99b2eca9761e3e1b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}