{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "186139300",
    "entityType": "User",
    "nonce": "0x64ee81473ed6d97208dc84d65b546d57b4374e30787ef4603e519906250ec43c",
    "signature": "0x6bb49b005c0bc97a13c06a5ea13c8ed0d6349d66961a31cc72485e7e9f54e18927d002ce5a6ccba23a2295d49b0aa71fb0329fa9aad6bfe95fc5826b3fac5d351c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}