{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "509315937",
    "entityType": "User",
    "nonce": "0xccff5a2578cd638fbdc12dc2ca1c0a6d6261280a180499350b43d484f58208a7",
    "signature": "0xb20c6287b228cd516492aec61cb3a8039e1a5228be6f9a8f23ac98dc1ef292f3281f7302c0360a368e7577982f0f375d7a5564528da22509301524934266f2001c",
    "signer": "0x6B239e9B75f27b519de7Bad3a26a0b7d30e32D3f",
    "userId": "311257477"
  }
}