{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "273725",
    "entityType": "User",
    "nonce": "0xa99c232d174dfcb8aa8f0b14e2d6ad17e15409bc79d1734b8393597d592bb7d5",
    "signature": "0x5dadbcb1e6f1964ac69058c1a6e161dcf197185f519ecb055ed3d9a590f30dad63cc6b6cbb4b6e100a72906108b44a9c021a270a9706dd3767eb24b818b8f8bb1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}