{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "337206",
    "entityType": "User",
    "nonce": "0x9b2954f934d3919064f3f79ebcbc78367bfd8bb6b9e733f2de5a4ba9f5a75f8c",
    "signature": "0x8a2e60342d72baa411c54b0a899194165ab038a77238dc4f68dfa9c99a2332da7d017a5f0614cefc199ed811dc89802a1807cb8cce2b419bc72e9ce5623a90871c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}