{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75469",
    "entityType": "User",
    "nonce": "0x4bb0153757382d9904e62e50d07f8a982505267e90f04fb590e3e0a2aa2fcf14",
    "signature": "0x12e083e643b46280a7cec85a13203630e6e92e7cc738b42b0b6fa38762f3034508a5b7200892b3f79eda273ddda7596f195f350ce83d8492522cd6838d5eadbe1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}