{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0xa61e9eaf72638060e521d3a60d6c67e0083c86891aae7375388ede08b2c382eb",
    "signature": "0xc765f265198e88a865259c6656eb321bd4ec954f48b179918d58f8d6667898810255ef0dae26826457dc63543250d0b0b1aa8cd0efe2a96b42f28d50e77e20911c",
    "signer": "0xE0EaB915C3153F4a2DF5C6e7b8D58dAc829Fbf2f",
    "userId": "774741623"
  }
}