{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304646",
    "entityType": "User",
    "nonce": "0x9d477372cef50d108e11956e3e57600a4b1efc1119a11ed2e3e2eff00c31c6ec",
    "signature": "0x89fd7a29154885851fb16be00a1d9b795893707ebc415d855b602e9ea2c4ea1702fec2abe4fd740e21a44d5ecb9e11408c86590300b3d346411ec1fbd9a302411b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}