{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4611d1c1374c83a420940e7d35400cd0d93e358441baa0a87eb019f8521bd539",
    "signature": "0x8a4ff8c1ed50c39e8f8f6a4c79abc9990191c8b845d26de7ef61b7bab91b6b9c2d6aad8659ac0537948e4803118d2a1d2bbfc926855e3a236dd7410191352b621b",
    "signer": "0xC04fe029b1076F5Bc23ce5987D1eB00db126BaA7",
    "userId": "532842857"
  }
}