{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xddf5c8819c339d0058dcecf9cd97d14fed4c9750afbaa5acd20724da183e84d7",
    "signature": "0x107ab24e525cbcaa95db68e1bc1cf97cee87966fcdeb3ae1b3d67d13f7ff23ed19e4b62f51494e1a7460ba5b82efbec4a7a3cd9ed1683d3546c523c7100c8a331b",
    "signer": "0xD349CF49C451B0cd6b7122e52C33AA5Ee921F70A",
    "userId": "133292324"
  }
}