{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325624",
    "entityType": "User",
    "nonce": "0x4f4caecf05ff6aea57d99ddc91084765ae8d6dc20c5aea77da405f8e4f8dc89b",
    "signature": "0x3a553ee6f88e68a120deb37041a843c4e12321c38b274b8aa8eb11aec9ef0e0f15bc15eece5a2d01d63c7e1a835e7d6eb16859bf697c3bc0560c4cc88238b54a1c",
    "signer": "0xa2ecEAAb74B2f9a94c5C470449fd6E64c121cB7F",
    "userId": "743206207"
  }
}