{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "618242981",
    "entityType": "User",
    "nonce": "0x4d0ee6d8951a033a33ed55aa28b6eb704ad4cca8a97ab7e3b59e9f3072b809c4",
    "signature": "0x32231f77e05c36b0799c6e39dd81ccd9d2a9ce4af6a03cc1833ed0b4b2bcef94147e17383bf4d9e67c0f8a03f64bbd6b178988f139c08dac97f8262db5dd87021c",
    "signer": "0x742Fff9be20F80Ce7285c8Ab12B9018Ef3Cf14F0",
    "userId": "111467392"
  }
}