{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd42c9c7ceec219bba1c1e755d091a177194244e9de664db672c5b9c7da0b37db",
    "signature": "0x8e2727cc6c22a675d3b1412c7708f15e52ed5395e2c74875e977f00d9840cd3b45934c12d9be33abe1b97454ea4d3108255c5f79c8334b84767bcd39e9949d131b",
    "signer": "0x9ED13561F00859bb46f6454dd397973c0B8463f7",
    "userId": "664110358"
  }
}