{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16251128",
    "entityType": "User",
    "nonce": "0x8c44a924322b9c686e9ae76a5cd4ab05ad69876078bca9ed12466bb70927ccbd",
    "signature": "0x1bdfd7cff5409f8c0cc4f4bf12dc6e2bde1e4bc59a37037525b3fa0b6af93d6137a0a5646655fdb67e653645bdc5037cdfe5e5bda2ada7c992aa72aa205bccf11c",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}