{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "778583001",
    "entityType": "User",
    "nonce": "0x6e36e6cf536a42c819bc36b8207fb72efbd68e8010bc8b1b4a086903000ff19e",
    "signature": "0xb4e4fef3bdd262fca3ebe957039917acc314aaf156e1cd23a7bcd720f741c6fb3451c9bc9019466e4b268f9974d777f0e3d46c05ce718833cc3aec98cc57c6151c",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}