{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "937477517",
    "entityType": "User",
    "nonce": "0x0ed88fb70efc0a8b419f2774257cfaf31f0aebc5c22315ed6f1bc9b5feff43ee",
    "signature": "0x8f2476d84fd7d7d87ddc9d42c1a55524c89e4e5e2fd9c5f04a84da3d133477c167ec3479985a0f64cb05b2b8e51a3ad479a46eca5368bb4729d1278b6bfdd7041c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}