{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb3bbed0a07d46e32ecbeeac56ecd9cfcb4a8c90b522d90141f802405f3119f1b",
    "signature": "0xbb10d65d3c83d1313ec48e93373f950e351009f2bb82bc6cc4fd8ba61ed59b4d432ccd5b5f20642148a973008949257940ee7c7c3e4c13cc0bcf723915b223601c",
    "signer": "0xb8744362B303B0256F9eb72De3c2268Aa49D430F",
    "userId": "738472358"
  }
}