{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "21894",
    "entityType": "User",
    "nonce": "0x917a2464dc65d383abea0632eafefb02c30ae063206b0d87beed8c3bd07c94f2",
    "signature": "0x0d4e475e152897e8a5b9a96493d21e1f230e1985aa177d950c69c1f34eadc298113c09a96f42253baf124868984ce3d65c5d8ebd6cab005cdc6e90d1b4f4495d1c",
    "signer": "0x48ECe992edB7C739B36f37DDbE8Fe352996B5A56",
    "userId": "183063753"
  }
}