{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb7affc3774394ffb3096a747ffbeb64a14c416134cde8ad423813fc3e7955bcb",
    "signature": "0xb04dd5d767be430da0b2fb597c40253c865dd4eff8ef3d43a11572267cdcbf140b8d8fd5a53f226e5733d5cf4be1bfb37e6df7a1b182d422467a078ddb28d87b1c",
    "signer": "0x8410ae550e371F50E654eE78f3b43Fd696c1a25c",
    "userId": "649036093"
  }
}