{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "571117272",
    "entityType": "User",
    "nonce": "0xd18f0cf883f5c90663e970771132f0666d7b73049a4c5aeff992812e372060fb",
    "signature": "0x801e97e4fdf912bd88df29c62c0d7d0d64dfddb6dd7dfb1d17838e02553682ac32e0c07faf6ae2bf37ccbe51fb4543bd7f8cf75701a24a7692ba5ccdbdd3d4701b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}