{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1a594cd009a51eba017325cd2decb8c53244947a4b00e989d01bc4ea7261cf01",
    "signature": "0x8ca6a3a55457a8177ba8419d592c929fb87c2298402167ef7cbe6247b7d8d87e3c2e0b20863c1ebcb09ab2300f69072be8f5a08f346e681fc40be71738abdf951b",
    "signer": "0x5BbB687Fbe839C8B9F891C776Bf0C9E63E100904",
    "userId": "11025204"
  }
}