{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203752",
    "entityType": "User",
    "nonce": "0x81e9b495e3d5af7ce2ca67faed34876d5f96bccd7e96aabf4d76ac13c8cbf249",
    "signature": "0x76838fe4de06fbc917c131c6d1a4142c6ad342de6107df8927045e4b15fc0055537846f4df984847e23a7eb5e539d050010a68507ff87ebcd802c53599d25c5c1b",
    "signer": "0x30572904F7B2dac7C9abbe5216f5Eb6D632Eb89D",
    "userId": "789393623"
  }
}