{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "281612",
    "entityType": "User",
    "nonce": "0x4911fbd0f3e78ab506d9083133eb8be0d716476913441bc92e177c6790573075",
    "signature": "0xd359ac2cb0142de8f20d5d0e895cd3bc845246232a9a3c5410e231657893f8415c0e4de398e3bd5eb5834bafedbb1cc5eeafede1207121029711fc42bc058b701b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}