{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x69b0a18ec7dc08d1e7245e1ace9aebc1cae8de846a680b90c78a05eb1d8d0844",
    "signature": "0xa3de7c11894fb34df97feb683f1ac68fe07c511b0087b64b1fb1e42d96d2d19220ecf63c2f92d57a27b819d75d8d40d56c4bd672587c9913cbd98bd14ba498b31b",
    "signer": "0x3b7a4c29d964A4b42A03753808fb1399d9273Ade",
    "userId": "823652912"
  }
}