{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0dfa5f489e103ee5a19ba23ddb889a93a53ea58681723823c11822aa0efed395",
    "signature": "0x6a105822cab3d8f2e20cc6aa97720bf2adef8254ebc6698e24b6226dcc56700b794bde247def4ceb5284648d9de44ad7f0ce38e2f86b81b0d585140498c9ba8d1b",
    "signer": "0x86B73df9a7D809ada1C52132BEF6eFAca9eA26b7",
    "userId": "641720329"
  }
}