{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "411",
    "entityType": "User",
    "nonce": "0xe1dfba17ac2c6d1f72c822112d1d301567413d7e4ab279306aaa9f3406b31738",
    "signature": "0x8290b64ee49ebeafa229b20012d9564bb1e32209a96698efe9c6640eb145b84f1576a73983f5d34abeb93e138bc91d4e4289cd3156c86cdc6abd5998e979cf511c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}