{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5293c277836b3d3333e97e8837cc5aa024995be76b3e9b2f9dd6a2350e0c86a7",
    "signature": "0x7f3f4df1c731b7a7f872b857317a547fdd2c2213aff152348c08710ddbf98aec124bc5c0ce3485dbdd26b02bf34db2b60260373ef2340650b3956d942392ee3e1c",
    "signer": "0x3c99C916b412826914E73876710B7801B798873A",
    "userId": "110898416"
  }
}