{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77374",
    "entityType": "User",
    "nonce": "0x45512bca5b1cbf2946cf2cce164b9333391e09ae5be9d4a0a80c15c34613e688",
    "signature": "0x001e17d487beb074a62d0ea97aa1d29a0889a13723d9ab0c65d5309d3a3f25ac3b832862d2ab105fbe19d19b01a5c0cbd91fb91bd71fae26b84b2d918a8eb2831b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}