{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfe4ff2383540938c358994c2e4bef59728557625de743babfcc07ea0e9273290",
    "signature": "0x6dfc323ea03d010b85d3467a32c3f9ca2a229ef4f02771f5213f57225185b7e036c9813465b812863c07d762b985efa435055315d4f4fad6a667d01a729f0c6d1c",
    "signer": "0xad6b380E71b2624b259f016e11ED900c9032c287",
    "userId": "918567161"
  }
}