{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6689",
    "entityType": "User",
    "nonce": "0x6f3252a2e1987bc284501197dd41d1e84acc72223f13f7e64e5d01899b3a3bc5",
    "signature": "0x3915699ef784db040c422450bc9c84d18877fcb9b6eb9ea6d62b9690b26e511622747c84d87f411bfd55061ebb73d6d7d66511e4f919082b2e9bc1eeb8b579a61c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}