{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137817",
    "entityType": "User",
    "nonce": "0x1e512b1215ef4e0fb096df0a38111cfa925bb4633c9d0fb2feb27cf2a0b7b7de",
    "signature": "0x3509771d30ffa628dc2eb2f17f61ed613bb997817a2c7e70d011b114feb7bb6b2f78b760a632c2ba5ad074b294be9b62406a926ef2465328a1b6db1c4afedf301c",
    "signer": "0x742Fff9be20F80Ce7285c8Ab12B9018Ef3Cf14F0",
    "userId": "111467392"
  }
}