{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154377962",
    "entityType": "User",
    "nonce": "0xcd3c69a1e311435516e0a8505159f4f9be1937b93234c6d4f384d28d0b528f38",
    "signature": "0xc870db9ed0e36ebc2a2103a31dd86233397e84e6feaedfe3d9e755452ff667d76c1bdbc25f4265a32b5d81894fb02ff21ce9d2cf2bf94a2d99c5bd1f64afb6da1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}