{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "258307",
    "entityType": "User",
    "nonce": "0x0974cad9a9761c3b766c1717410a4883baa5174e126e4bd8a465bd138ee01c1c",
    "signature": "0x052a4e1d7cc45a302b5736e1ff9e487b6fad2b213c9ee3cefb3f82b93e13538f06e7a668a264269e82a4b90759053ca9da53fbfc301ad46f35b705fedfbe54e51b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}