{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1eb0d8f66722b0ba095dc59fe7fc8f4db9774cc238a6a1f7459fc714f0257846",
    "signature": "0x3dfcdf4ec4e0ea2e41b969df3869c421355b5a1a000372b86c85509e7635578715e905fde4bd35079394c03a1093e2164d67648334dc6f63f0e085b562ce21641c",
    "signer": "0xa716EE6aE1fcAF06103c738DEC715D52277f96DF",
    "userId": "450917397"
  }
}