{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309080",
    "entityType": "User",
    "nonce": "0xfada6c6057e5016169f83fea4f32a91f77ff8f07894c3336d900209aafb2c881",
    "signature": "0x9e9f2347b58add83a55d43c5622f0001dd56682a88c4f587ebea410fc18209f34d0211b567943cb733170434a71b1a22885dd5e480d2eab3e6b68cef8752e1161c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}