{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "101990",
    "entityType": "User",
    "nonce": "0x2977326354389a317c2d505e7067d4555185149d97a321b3d4bde7b2ed512218",
    "signature": "0x0c3fa1e25f11f488eabc1645ca6d008e5c12d7cb77b2f4778f4e1170ab7c94f91cd0019694c8af93d471e24765c0fb766c69b417df1897a646549327f35674801c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}