{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x129c6354b124a068d172b3ea2911950a4af30387d81ed87f7b7d8927cc077d2b",
    "signature": "0xc25e7a238c83199a94b2a5368edae6bb3486de534637fa119ca9b61644d63eec1e8b1443be4f7c5077a82135a15f23cb1224a1a51106362eed22dff54fc1f7a21c",
    "signer": "0xd23f8E07570E61600393d209664bE2Fa4236E17D",
    "userId": "876476535"
  }
}