{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "631756877",
    "entityType": "User",
    "nonce": "0x831b5c2f60f6b15a6412ec31f2b7cea56bc1ef7b30f8f3be47bed356abdeb56a",
    "signature": "0x7a6967b23a1b78d74c78da3bcdb992755fd9f3af51060f52cfb7a2c15115e50001267e33ec6e6e7ea195c24ac0e5cc8dd202a5cf9c94ccb1912760900fe78beb1c",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}