{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12909",
    "entityType": "User",
    "nonce": "0x716bbd3ee645ac43b335f5e37579e780b2e816c66e29e25a97972e4b11792612",
    "signature": "0x3af68cebb83c60735526cc87255d5aa72c362a931bae575a1ebc86dfc31dcfad29c2ee7ef2eb8876f7ec954d0c3baf4aa92ef3431f8b9a1023bb70f2766dffde1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}