{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "995816736",
    "entityType": "User",
    "nonce": "0xc9451aa4bcb5515fee3450101f87878495944fe759c39ec2a14d24261958a90f",
    "signature": "0x54949c730fef33b57226e52cf24edb8f50b2885546a260fb3d5ded9994079c38117d51527da8b3b5930abdecdb74ae6843e993d67c00e71b212f7e2b94c270c21c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}